Custom kernel comes out as wrong arch

[alexmcwhirter@triadic.us]

I've been working on some kernel customizations to fix a few issues, and 
went ahead and compiled a kernel with " make deb-pkg". The problem is 
that the resulting .deb is the wrong arch.

dpkg -i linux-headers-4.6.4-rt6-5yn3r6y_4.6.4-1_sparc.deb
dpkg: error processing archive 
linux-headers-4.6.4-rt6-5yn3r6y_4.6.4-1_sparc.deb (--install):
 package architecture (sparc) does not match system (sparc64)
Errors were encountered while processing:
 linux-headers-4.6.4-rt6-5yn3r6y_4.6.4-1_sparc.deb

Is there a way to override the arch to sparc64 when building or did i 
make a mistake along the way?